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Add -dwarf-debug-flags, which provides a way to embed the cc1 level options used

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to compile a translation unit into the debug info for that file.
 - Used by parts of Darwin build process to check compiler flags, etc.
 - <rdar://problem/7256886> clang does not emit AT_APPLE_flags

llvm-svn: 91661
This commit is contained in:
Daniel Dunbar
2009-12-18 02:43:17 +00:00
parent 916fec41fb
commit 24c7f5efc5
9 changed files with 51 additions and 7 deletions
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5
clang/lib/Frontend/CompilerInvocation.cpp
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@@ -122,6 +122,10 @@ static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
Res.push_back("-disable-llvm-optzns");
if (Opts.DisableRedZone)
Res.push_back("-disable-red-zone");
if (!Opts.DwarfDebugFlags.empty()) {
Res.push_back("-dwarf-debug-flags");
Res.push_back(Opts.DwarfDebugFlags);
}
if (!Opts.MergeAllConstants)
Res.push_back("-fno-merge-all-constants");
if (Opts.NoCommon)
@@ -749,6 +753,7 @@ static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
Opts.DebugInfo = Args.hasArg(OPT_g);
Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
Opts.NoCommon = Args.hasArg(OPT_fno_common);
Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);